Method for switching operation of water wheel or pump water wheel

Patent · Tue Feb 07 00:00:00 EST 1984

OSTI ID:6708885

Ogiwara, K

A method for switching the mode of operation of a water wheel or a pump water wheel is disclosed. Water in a runner chamber of the water wheel or the pump water wheel is pushed down below a runner by supplying compressed air to cause a runner to race. When the operation of the water wheel or the pump water wheel is switched from an idling or racing operation of the runner to a generation mode, the characteristics of the water wheel or the pump water wheel and/or a power system are monitored and the monitored characteristics are compared with predetermined values. Based on the compare result, the operation is switched to the generation mode with or without the disconnection of a motor generator coupled to the water wheel or the pump water wheel from the power system.

• Assignee: Hitachi, Ltd. (Japan)
• Patent Number(s): US 4430574
• OSTI ID: 6708885
• Resource Relation: Patent Priority Date: Priority date 1 Sep 1980, Japan; Other Information: PAT-APPL-298262
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
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HYDRAULICS
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HYDRAULIC TURBINES
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COMPRESSED AIR
FLOW REGULATORS
PNEUMATIC CONTROLLERS
PRESSURE DEPENDENCE
SWITCHING CIRCUITS
AIR
COMPRESSED GASES
CONTROL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
FLUID MECHANICS
FLUIDS
GASES
MACHINERY
MECHANICS
MOTORS
TURBINES
TURBOMACHINERY
200104* - Fossil-Fueled Power Plants- Components